Based on what, a form of polyalphabetic substitution uses a series of interwoven Caesar ciphers for encrypting alphabetic text?
letters of a keyword
-1
Section::::Abstract.
Polyalphabetic cipher
157918
-1
Section::::Abstract.
Polyalphabetic cipher
157918
-1
Section::::Abstract.
Vigenère cipher
69509
-1
Section::::Abstract.
Vigenère cipher
69509